CATALYST
Considering wood?Ask us anything.
Whether you have questions about mass timber, light wood-frame or hybrid construction, our team of architects, engineers and construction experts is available to help. Contact us for free project support, or visit woodworks.org for upcoming education, design tools, and a wide range of technical resources.
www.woodworks.org/project-assistance
C A S E S T U D Y CATALYST
Disclaimer: The information in this publication, including, without limitation, references to information contained in other publications or made available by other sources (collectively “information”) should not be used or relied upon for any application without competent professional examination and verification of its accuracy, suitability, code compliance and applicability by a licensed engineer, architect or other professional. Neither the Wood Products Council nor its employees, consultants, nor any other individuals or entities who contributed to the information make any warranty, representative or guarantee, expressed or implied, that the information is suitable for any general or particular use, that it is compliant with applicable law, codes or ordinances, or that it is free from infringement of any patent(s), nor do they assume any legal liability or responsibility for the use, application of and/or reference to the information. Anyone making use of the information in any manner assumes all liability arising from such use.
Woodworks is an equal opportunity provider.Photos: Katerra – MGA | Michael Green Architecture © Ben Benschneider • WoodWorks Case Study WW-024 • Catalyst © 2020 WoodWorks
PROJECT DETAILS
LOCATION:
Spokane, Washington
STORIES:
Five stories plus partial day-lit basement
SIZE:
164,000 square feet
CONSTRUCTION TYPE:
Type IV Heavy Timber
COMPLETED:
2020
PROJECT TEAM
CLIENT/OWNER:
Avista Development, McKinstry, South Landing Investors LLC
ARCHITECT:
Katerra (Architect of Record) + Michael Green Architecture (Design Architect)
STRUCTURAL ENGINEER:
KPFF
CONTRACTOR:
Katerra Construction
CLT SUPPLIERS:
Katerra, Structurlam
GLULAM SUPPLIER:
Western Archrib
RIB PANEL ENGINEERING
AND SUPPLIER:
Katerra
A
ptly named for its goal of inspiring new ways to build,
Catalyst is the first cross-laminated timber (CLT) office
building constructed in Washington state and the first to use
panels produced at Katerra’s new CLT production facility. It is also
designed to Passive House principles and to achieve zero-carbon
and zero-energy certification from the
International Living Future Institute
(ILFI), making it a leading example
of sustainable building design.
“Catalyst, which anchors the
new South Landing Eco-District, is
more than just another smart building
project,” said Dean Allen, CEO of
McKinstry. “It is the cornerstone
of a fully integrated neighborhood
that will serve as a living laboratory
for new sustainability technologies,
materials, construction techniques and operational practices.
Catalyst demonstrates how the built environment can be
constructed and operated for our partners, our clients, our
communities and our planet to deliver sustainability and impact,
not just physical space.”
Catalyst is the first CLT office
building in Washington State,
and the first to use CLT panels
produced at the new Katerra
facility in the Spokane Valley. The
use of CLT means the building will
have a smaller carbon footprint
than comparable buildings built
with steel and concrete.
Mass timber building serves as an agent for change
1 LCA of Katerra’s CLT and Catalyst Building, Carbon Leadership Forum and the Center for International Trade in Forest Products at the University of Washington (2020), https://carbonleadershipforum.org/katerra/
2 Embodied Carbon Benchmark Study, Carbon Leadership Forum (2020), https://carbonleadershipforum.org/embodied-carbon-benchmark-study-1/
3 Environmental Product Declarations (EPDs) for Wood, American Wood Council, www.awc.org
FRA-849_CATALYST_CaseStudy_SIX-PANEL-3.indd 1FRA-849_CATALYST_CaseStudy_SIX-PANEL-3.indd 1 12/21/20 1:43 PM12/21/20 1:43 PM
CATALYST
Considering wood?Ask us anything.
Whether you have questions about mass timber, light wood-frame or hybrid construction, our team of architects, engineers and construction experts is available to help. Contact us for free project support, or visit woodworks.org for upcoming education, design tools, and a wide range of technical resources.
www.woodworks.org/project-assistance
C A S E S T U D Y CATALYST
Disclaimer: The information in this publication, including, without limitation, references to information contained in other publications or made available by other sources (collectively “information”) should not be used or relied upon for any application without competent professional examination and verification of its accuracy, suitability, code compliance and applicability by a licensed engineer, architect or other professional. Neither the Wood Products Council nor its employees, consultants, nor any other individuals or entities who contributed to the information make any warranty, representative or guarantee, expressed or implied, that the information is suitable for any general or particular use, that it is compliant with applicable law, codes or ordinances, or that it is free from infringement of any patent(s), nor do they assume any legal liability or responsibility for the use, application of and/or reference to the information. Anyone making use of the information in any manner assumes all liability arising from such use.
Woodworks is an equal opportunity provider.Photos: Katerra – MGA | Michael Green Architecture © Ben Benschneider • WoodWorks Case Study WW-024 • Catalyst © 2020 WoodWorks
PROJECT DETAILS
LOCATION:
Spokane, Washington
STORIES:
Five stories plus partial day-lit basement
SIZE:
164,000 square feet
CONSTRUCTION TYPE:
Type IV Heavy Timber
COMPLETED:
2020
PROJECT TEAM
CLIENT/OWNER:
Avista Development, McKinstry, South Landing Investors LLC
ARCHITECT:
Katerra (Architect of Record) + Michael Green Architecture (Design Architect)
STRUCTURAL ENGINEER:
KPFF
CONTRACTOR:
Katerra Construction
CLT SUPPLIERS:
Katerra, Structurlam
GLULAM SUPPLIER:
Western Archrib
RIB PANEL ENGINEERING
AND SUPPLIER:
Katerra
A
ptly named for its goal of inspiring new ways to build,
Catalyst is the first cross-laminated timber (CLT) office
building constructed in Washington state and the first to use
panels produced at Katerra’s new CLT production facility. It is also
designed to Passive House principles and to achieve zero-carbon
and zero-energy certification from the
International Living Future Institute
(ILFI), making it a leading example
of sustainable building design.
“Catalyst, which anchors the
new South Landing Eco-District, is
more than just another smart building
project,” said Dean Allen, CEO of
McKinstry. “It is the cornerstone
of a fully integrated neighborhood
that will serve as a living laboratory
for new sustainability technologies,
materials, construction techniques and operational practices.
Catalyst demonstrates how the built environment can be
constructed and operated for our partners, our clients, our
communities and our planet to deliver sustainability and impact,
not just physical space.”
Catalyst is the first CLT office
building in Washington State,
and the first to use CLT panels
produced at the new Katerra
facility in the Spokane Valley. The
use of CLT means the building will
have a smaller carbon footprint
than comparable buildings built
with steel and concrete.
Mass timber building serves as an agent for change
1 LCA of Katerra’s CLT and Catalyst Building, Carbon Leadership Forum and the Center for International Trade in Forest Products at the University of Washington (2020), https://carbonleadershipforum.org/katerra/
2 Embodied Carbon Benchmark Study, Carbon Leadership Forum (2020), https://carbonleadershipforum.org/embodied-carbon-benchmark-study-1/
3 Environmental Product Declarations (EPDs) for Wood, American Wood Council, www.awc.org
FRA-849_CATALYST_CaseStudy_SIX-PANEL-3.indd 1FRA-849_CATALYST_CaseStudy_SIX-PANEL-3.indd 1 12/21/20 1:43 PM12/21/20 1:43 PM
CATALYST
What happens when a technology and building
development company joins forces with an energy utility, public
university and full-service engineering firm to develop the first
building in what they hope will eventually become the smartest
five blocks in the world? The end-to-end collaboration used to
build Catalyst established a new construction model that set
multiple precedents, not only in design, how building materials
were fabricated and how the structure was built, but also in
how the building will be used.
The five-story Catalyst contains classroom and lab space for
approximately 1,000 Eastern Washington University students
studying engineering and applied sciences. It also includes
leased office space, creating a unique opportunity for public and
private sector collaboration.
Adjacent to Catalyst is the Scott Morris Center for Energy
Innovation, which houses centralized heating, cooling and
electrical systems for buildings in the EcoDistrict. The system
includes solar panels, battery and thermal storage, and shared
utilities. It is managed through a smart grid that allows for real-
time, automated energy management resulting in lower energy
consumption and expense.
Catalyst was constructed using an all-wood structural system,
including glue-laminated timber (glulam) columns and beams,
CLT shear wall panels and glulam/CLT composite floor and roof
ribbed panels. Most of the timber structure and the exterior CLT
wall panels are left exposed to the interior. “One of the unique
things about Catalyst is the fact that it simply looks different,”
said Jim Nicolow, Director of Sustainability for Katerra. “The
use of exposed mass timber gives the building incredible
character—and its environmental story is even better.”
Innovative CLT ApplicationsThe glulam beams used in the post-and-beam structural frame
are 14 and 16 inches wide, and up to 40 inches deep. CLT panel
thicknesses varied, with 3-ply used for exterior walls, 5-ply
for floors and roofs, and 7-ply for shear walls. All mass timber
products were made using spruce-pine-fir (SPF) for a clean and
light interior aesthetic. Structurlam provided the 3- and 7-ply CLT
panels. The 5-ply floor and roof panels were the first product to
roll off the lines at Katerra’s new CLT manufacturing facility in
nearby Spokane Valley. Today, Katerra’s plant is certified for all
CLT thicknesses.
Catalyst was built on top of a conventional concrete slab on
grade, and a balloon-frame shear wall design was used for the
wood lateral system at the building’s core. Buckling-restrained
braces are used as high-strength ductile hold-down elements
for the 7-ply CLT shear walls, making Catalyst one of the tallest
buildings to include CLT shear walls in the U.S.
CLT shear panels were stacked and spliced together with
a glued-in rod connection. “The rods were glued into the
bottom panel so the panel above could be dropped into the
slot, and then it was field glued to create a concealed, strong
and stiff connection,” said Hans-Erik Blomgren, Director of
Testing and Certification, Structural Products at Katerra. “It
was a progressive design, which the design team verified with
testing.”
Katerra also utilized an innovative timber-timber composite
rib floor panel. Crews glued and screwed two glulam beams to
the underside of each 10x30-foot CLT floor panel at the factory,
making the panel fit perfectly within Catalyst’s 30x30-foot
grid while taking full advantage of Katerra’s CLT manufacturing
capabilities.
“Use of the double-T rib configuration allowed us to maintain
a shallow span-to-depth ratio of 15.5,” explained Blomgren.
“Even when we added lightweight concrete topping, the panel
weighed just 41 psf. The 30-foot span is perfect for office use,
so from a developer and structural engineer point of view, it
offers exciting opportunities.”
“To our knowledge, this is one of the first projects in North
America able to achieve a long span using true wood-to-
wood composite action in these rib panels instead of concrete
composite action,” added Katerra’s Design Project Manager,
Drew Kleman.
Extensive TestingKaterra conducted destructive structural testing of critical
CLT shear wall corner connections and full-scale rib panels at
Oregon State University. “Testing gave us the confidence of
knowing the true strength and stiffness of the rib and shear
wall panels, and a way to streamline future product and building
code approvals,” said Blomgren. “Both stiffness and strength
slightly exceeded our predictions and proved that this system
can be replicated in the future.”
Acoustic and vibration performance also exceeded the
predictive models. “We tested the rib panel floor vibration
during construction, and again after the tenant improvement
was completed to quantify performance,” added Blomgren.
“There were a few nervous engineers and developers in the
room because the structural system spans 30 feet and is so
lightweight, but the test results make for a good success story.”
Long-term energy performance was another success story.
RDH, the consulting firm that performed the air leakage test
for the building envelope, reported that the air tightness
measurements, at 0.035 cfm per square foot, were the best
they have seen for a commercial building—even exceeding
Passive House requirements.
Catalyst Also Tells a Great Carbon StoryThe client’s desire to build a zero-carbon building was supported
by Katerra and heavily influenced design decisions. The design
team knew that mass timber would provide a smaller carbon
footprint than a comparable steel or concrete building, but they
wanted to know how much smaller.
In 2019, Katerra commissioned the Carbon Leadership
Forum and the Center for International Trade in Forest Products
(CINTRAFOR) at the University of Washington to undertake a
two-part Whole Building Life Cycle Assessment (WBLCA)—
one part focused on its supply chain and manufacturing
process, and the other on Catalyst.1 The goal was to understand
the environmental impacts and highlight opportunities for
impact reduction.
For Catalyst, the overall global warming potential was
calculated at 207 kg CO2e/m2 in emissions, and the carbon
dioxide stored in the wood building components was calculated
at 204 kg CO2e/m2. According to the report, “…the biogenic
carbon storage practically offsets the impacts of construction,
at least in the near-term before the wood decomposes in a
landfill at end-of-life.”
Nicolow emphasized the significance of the findings. “The
global warming potential for Catalyst was about half what you
might expect for a project like this; the median reported value in
the Carbon Leadership Forum’s Embodied Carbon Benchmark
Study 2 for commercial projects is 396 kg CO2e/m2,” he said.
“The manufacturing side, which includes harvesting, fabricating,
and building the mass timber panels, generates significantly
lower carbon emissions than concrete or steel. So, Catalyst tells
a great story, even before you consider biogenic carbon. But
when carbon storage is considered, the story is even better.
You not only have a low-embodied carbon building, but you
have a carbon-sequestering material that essentially makes up
for some of the emissions associated with the conventional
materials that went into the building.”
The leading standards for life cycle assessment, ISO 14040
and 14044, both consider biogenic carbon in their calculations. In
2020, the American Wood Council also updated environmental
product declarations3 for seven wood products, all of which
also consider biogenic carbon.
End-to-End Design, Manufacturing and Construction EfficienciesOne of Katerra’s corporate philosophies is to reduce on-site
labor and maximize efficiency by using factory-built assemblies
to speed construction. Catalyst accomplished that on several
fronts.
For example, the design team collaborated closely with
the CLT manufacturing team to optimize the fit between the
desired 30x30 grid spacing and the CLT plant’s capabilities.
“We considered manufacturing efficiency and used it to inform
the overall building design and floor plan,” said Kleman.
“When designers know the optimal capabilities of the CLT
fabrication line, we can work to use the entire panel, which
improves manufacturing efficiency and lowers cost and waste,”
Nicolow added. “Design for manufacturing is a matter of
optimizing one to take advantage of the other.”
Efficiency also translates to energy efficiency over the
life of the building, added Nicolow. “When you move to a
manufacturing paradigm and you’re bringing large, factory-
built panels to the job site rather than site-building from a kit
of smaller parts, it all translates to improved air tightness of the
envelope and better performance over time.”
Catalyst was progressive in terms of collaboration; everything
was coordinated, from design to installation on site, by a
vertically integrated team. Blomgren noted that, “It’s easier to
make key decisions early in design when the pain of change
is lower ... decisions that will make fabrication and installation
more efficient. Future Katerra projects are going to benefit from
the lessons learned from the Catalyst experience.”
Construction efficiency also added value. “End-to-
end collaboration and modeling were key,” said Katerra’s
construction manager, Kora Todd. “We held to tight tolerances;
doing so made it easier to identify a problem when something
didn’t fit precisely. I told everyone I never wanted to hear a
chainsaw on the job site—and 99.5 percent of the members
fit perfectly.”
Safety was another benefit of the CLT rib panels, since all
350 could be picked and quickly lifted into place, reducing the
amount of time workers spent under a crane. Crews improved
the rib panel installation process along the way; they began
with 30 minutes between panel crane picks, and eventually cut
that time by more than half.
Two-story CLT exterior wall panels arrived at the site almost
fully prefabricated, with a gasketed silicon strip system where
panels met. Fabricating crews applied the weather-resistant
barrier, window pre-flashing and insulation to the 3-ply CLT
panels at the factory for quick on-site panel installation.
Katerra ran four crews—shear walls, columns and beams,
floor panels and hardware—and each had four to five people
working at any one time. The entire structure took 11 weeks
to erect.
Education, Innovation Catalyst provided learning opportunities for all involved, even
the students who will use the facilty.
“Our goal was to create a building that would promote
learning and create an overall sense of student well-being,”
said Mingyuk Chen, Design Team Lead at Michael Green
Architecture. “So many studies point to the biophilic benefits of
natural materials. We like to use a building itself as teacher, and
Catalyst achieves that by exposing the structure.”
Extensive testing opened doors for future projects. “We
learned we could effectively build a five-story CLT shear wall,
avoiding the need for concrete,” said Blomgren. “We also
learned we could design rib panels to meet the 30-foot column
grid needed by the developer. A lot of thinking went into that
structural frame, even down to the vibration and acoustic
design, and it was all verified by actual testing. We rarely get
the chance to do that.”
The WBLCA shed light on the overall sustainability of the
project. “There’s been so much attention in the building sector
on operational energy and operational emissions,” Nicolow
said. “We’re just now shifting our attention to the impact of
the building products themselves, to the embodied carbon
story. Catalyst provides a great example of how wood can help
lower embodied carbon in buildings. To me, it’s one of the most
exciting aspects of the project.”
FRA-849_CATALYST_CaseStudy_SIX-PANEL-3.indd 2FRA-849_CATALYST_CaseStudy_SIX-PANEL-3.indd 2 12/21/20 1:43 PM12/21/20 1:43 PM
CATALYST
What happens when a technology and building
development company joins forces with an energy utility, public
university and full-service engineering firm to develop the first
building in what they hope will eventually become the smartest
five blocks in the world? The end-to-end collaboration used to
build Catalyst established a new construction model that set
multiple precedents, not only in design, how building materials
were fabricated and how the structure was built, but also in
how the building will be used.
The five-story Catalyst contains classroom and lab space for
approximately 1,000 Eastern Washington University students
studying engineering and applied sciences. It also includes
leased office space, creating a unique opportunity for public and
private sector collaboration.
Adjacent to Catalyst is the Scott Morris Center for Energy
Innovation, which houses centralized heating, cooling and
electrical systems for buildings in the EcoDistrict. The system
includes solar panels, battery and thermal storage, and shared
utilities. It is managed through a smart grid that allows for real-
time, automated energy management resulting in lower energy
consumption and expense.
Catalyst was constructed using an all-wood structural system,
including glue-laminated timber (glulam) columns and beams,
CLT shear wall panels and glulam/CLT composite floor and roof
ribbed panels. Most of the timber structure and the exterior CLT
wall panels are left exposed to the interior. “One of the unique
things about Catalyst is the fact that it simply looks different,”
said Jim Nicolow, Director of Sustainability for Katerra. “The
use of exposed mass timber gives the building incredible
character—and its environmental story is even better.”
Innovative CLT ApplicationsThe glulam beams used in the post-and-beam structural frame
are 14 and 16 inches wide, and up to 40 inches deep. CLT panel
thicknesses varied, with 3-ply used for exterior walls, 5-ply
for floors and roofs, and 7-ply for shear walls. All mass timber
products were made using spruce-pine-fir (SPF) for a clean and
light interior aesthetic. Structurlam provided the 3- and 7-ply CLT
panels. The 5-ply floor and roof panels were the first product to
roll off the lines at Katerra’s new CLT manufacturing facility in
nearby Spokane Valley. Today, Katerra’s plant is certified for all
CLT thicknesses.
Catalyst was built on top of a conventional concrete slab on
grade, and a balloon-frame shear wall design was used for the
wood lateral system at the building’s core. Buckling-restrained
braces are used as high-strength ductile hold-down elements
for the 7-ply CLT shear walls, making Catalyst one of the tallest
buildings to include CLT shear walls in the U.S.
CLT shear panels were stacked and spliced together with
a glued-in rod connection. “The rods were glued into the
bottom panel so the panel above could be dropped into the
slot, and then it was field glued to create a concealed, strong
and stiff connection,” said Hans-Erik Blomgren, Director of
Testing and Certification, Structural Products at Katerra. “It
was a progressive design, which the design team verified with
testing.”
Katerra also utilized an innovative timber-timber composite
rib floor panel. Crews glued and screwed two glulam beams to
the underside of each 10x30-foot CLT floor panel at the factory,
making the panel fit perfectly within Catalyst’s 30x30-foot
grid while taking full advantage of Katerra’s CLT manufacturing
capabilities.
“Use of the double-T rib configuration allowed us to maintain
a shallow span-to-depth ratio of 15.5,” explained Blomgren.
“Even when we added lightweight concrete topping, the panel
weighed just 41 psf. The 30-foot span is perfect for office use,
so from a developer and structural engineer point of view, it
offers exciting opportunities.”
“To our knowledge, this is one of the first projects in North
America able to achieve a long span using true wood-to-
wood composite action in these rib panels instead of concrete
composite action,” added Katerra’s Design Project Manager,
Drew Kleman.
Extensive TestingKaterra conducted destructive structural testing of critical
CLT shear wall corner connections and full-scale rib panels at
Oregon State University. “Testing gave us the confidence of
knowing the true strength and stiffness of the rib and shear
wall panels, and a way to streamline future product and building
code approvals,” said Blomgren. “Both stiffness and strength
slightly exceeded our predictions and proved that this system
can be replicated in the future.”
Acoustic and vibration performance also exceeded the
predictive models. “We tested the rib panel floor vibration
during construction, and again after the tenant improvement
was completed to quantify performance,” added Blomgren.
“There were a few nervous engineers and developers in the
room because the structural system spans 30 feet and is so
lightweight, but the test results make for a good success story.”
Long-term energy performance was another success story.
RDH, the consulting firm that performed the air leakage test
for the building envelope, reported that the air tightness
measurements, at 0.035 cfm per square foot, were the best
they have seen for a commercial building—even exceeding
Passive House requirements.
Catalyst Also Tells a Great Carbon StoryThe client’s desire to build a zero-carbon building was supported
by Katerra and heavily influenced design decisions. The design
team knew that mass timber would provide a smaller carbon
footprint than a comparable steel or concrete building, but they
wanted to know how much smaller.
In 2019, Katerra commissioned the Carbon Leadership
Forum and the Center for International Trade in Forest Products
(CINTRAFOR) at the University of Washington to undertake a
two-part Whole Building Life Cycle Assessment (WBLCA)—
one part focused on its supply chain and manufacturing
process, and the other on Catalyst.1 The goal was to understand
the environmental impacts and highlight opportunities for
impact reduction.
For Catalyst, the overall global warming potential was
calculated at 207 kg CO2e/m2 in emissions, and the carbon
dioxide stored in the wood building components was calculated
at 204 kg CO2e/m2. According to the report, “…the biogenic
carbon storage practically offsets the impacts of construction,
at least in the near-term before the wood decomposes in a
landfill at end-of-life.”
Nicolow emphasized the significance of the findings. “The
global warming potential for Catalyst was about half what you
might expect for a project like this; the median reported value in
the Carbon Leadership Forum’s Embodied Carbon Benchmark
Study 2 for commercial projects is 396 kg CO2e/m2,” he said.
“The manufacturing side, which includes harvesting, fabricating,
and building the mass timber panels, generates significantly
lower carbon emissions than concrete or steel. So, Catalyst tells
a great story, even before you consider biogenic carbon. But
when carbon storage is considered, the story is even better.
You not only have a low-embodied carbon building, but you
have a carbon-sequestering material that essentially makes up
for some of the emissions associated with the conventional
materials that went into the building.”
The leading standards for life cycle assessment, ISO 14040
and 14044, both consider biogenic carbon in their calculations. In
2020, the American Wood Council also updated environmental
product declarations3 for seven wood products, all of which
also consider biogenic carbon.
End-to-End Design, Manufacturing and Construction EfficienciesOne of Katerra’s corporate philosophies is to reduce on-site
labor and maximize efficiency by using factory-built assemblies
to speed construction. Catalyst accomplished that on several
fronts.
For example, the design team collaborated closely with
the CLT manufacturing team to optimize the fit between the
desired 30x30 grid spacing and the CLT plant’s capabilities.
“We considered manufacturing efficiency and used it to inform
the overall building design and floor plan,” said Kleman.
“When designers know the optimal capabilities of the CLT
fabrication line, we can work to use the entire panel, which
improves manufacturing efficiency and lowers cost and waste,”
Nicolow added. “Design for manufacturing is a matter of
optimizing one to take advantage of the other.”
Efficiency also translates to energy efficiency over the
life of the building, added Nicolow. “When you move to a
manufacturing paradigm and you’re bringing large, factory-
built panels to the job site rather than site-building from a kit
of smaller parts, it all translates to improved air tightness of the
envelope and better performance over time.”
Catalyst was progressive in terms of collaboration; everything
was coordinated, from design to installation on site, by a
vertically integrated team. Blomgren noted that, “It’s easier to
make key decisions early in design when the pain of change
is lower ... decisions that will make fabrication and installation
more efficient. Future Katerra projects are going to benefit from
the lessons learned from the Catalyst experience.”
Construction efficiency also added value. “End-to-
end collaboration and modeling were key,” said Katerra’s
construction manager, Kora Todd. “We held to tight tolerances;
doing so made it easier to identify a problem when something
didn’t fit precisely. I told everyone I never wanted to hear a
chainsaw on the job site—and 99.5 percent of the members
fit perfectly.”
Safety was another benefit of the CLT rib panels, since all
350 could be picked and quickly lifted into place, reducing the
amount of time workers spent under a crane. Crews improved
the rib panel installation process along the way; they began
with 30 minutes between panel crane picks, and eventually cut
that time by more than half.
Two-story CLT exterior wall panels arrived at the site almost
fully prefabricated, with a gasketed silicon strip system where
panels met. Fabricating crews applied the weather-resistant
barrier, window pre-flashing and insulation to the 3-ply CLT
panels at the factory for quick on-site panel installation.
Katerra ran four crews—shear walls, columns and beams,
floor panels and hardware—and each had four to five people
working at any one time. The entire structure took 11 weeks
to erect.
Education, Innovation Catalyst provided learning opportunities for all involved, even
the students who will use the facilty.
“Our goal was to create a building that would promote
learning and create an overall sense of student well-being,”
said Mingyuk Chen, Design Team Lead at Michael Green
Architecture. “So many studies point to the biophilic benefits of
natural materials. We like to use a building itself as teacher, and
Catalyst achieves that by exposing the structure.”
Extensive testing opened doors for future projects. “We
learned we could effectively build a five-story CLT shear wall,
avoiding the need for concrete,” said Blomgren. “We also
learned we could design rib panels to meet the 30-foot column
grid needed by the developer. A lot of thinking went into that
structural frame, even down to the vibration and acoustic
design, and it was all verified by actual testing. We rarely get
the chance to do that.”
The WBLCA shed light on the overall sustainability of the
project. “There’s been so much attention in the building sector
on operational energy and operational emissions,” Nicolow
said. “We’re just now shifting our attention to the impact of
the building products themselves, to the embodied carbon
story. Catalyst provides a great example of how wood can help
lower embodied carbon in buildings. To me, it’s one of the most
exciting aspects of the project.”
FRA-849_CATALYST_CaseStudy_SIX-PANEL-3.indd 2FRA-849_CATALYST_CaseStudy_SIX-PANEL-3.indd 2 12/21/20 1:43 PM12/21/20 1:43 PM
CATALYST
What happens when a technology and building
development company joins forces with an energy utility, public
university and full-service engineering firm to develop the first
building in what they hope will eventually become the smartest
five blocks in the world? The end-to-end collaboration used to
build Catalyst established a new construction model that set
multiple precedents, not only in design, how building materials
were fabricated and how the structure was built, but also in
how the building will be used.
The five-story Catalyst contains classroom and lab space for
approximately 1,000 Eastern Washington University students
studying engineering and applied sciences. It also includes
leased office space, creating a unique opportunity for public and
private sector collaboration.
Adjacent to Catalyst is the Scott Morris Center for Energy
Innovation, which houses centralized heating, cooling and
electrical systems for buildings in the EcoDistrict. The system
includes solar panels, battery and thermal storage, and shared
utilities. It is managed through a smart grid that allows for real-
time, automated energy management resulting in lower energy
consumption and expense.
Catalyst was constructed using an all-wood structural system,
including glue-laminated timber (glulam) columns and beams,
CLT shear wall panels and glulam/CLT composite floor and roof
ribbed panels. Most of the timber structure and the exterior CLT
wall panels are left exposed to the interior. “One of the unique
things about Catalyst is the fact that it simply looks different,”
said Jim Nicolow, Director of Sustainability for Katerra. “The
use of exposed mass timber gives the building incredible
character—and its environmental story is even better.”
Innovative CLT ApplicationsThe glulam beams used in the post-and-beam structural frame
are 14 and 16 inches wide, and up to 40 inches deep. CLT panel
thicknesses varied, with 3-ply used for exterior walls, 5-ply
for floors and roofs, and 7-ply for shear walls. All mass timber
products were made using spruce-pine-fir (SPF) for a clean and
light interior aesthetic. Structurlam provided the 3- and 7-ply CLT
panels. The 5-ply floor and roof panels were the first product to
roll off the lines at Katerra’s new CLT manufacturing facility in
nearby Spokane Valley. Today, Katerra’s plant is certified for all
CLT thicknesses.
Catalyst was built on top of a conventional concrete slab on
grade, and a balloon-frame shear wall design was used for the
wood lateral system at the building’s core. Buckling-restrained
braces are used as high-strength ductile hold-down elements
for the 7-ply CLT shear walls, making Catalyst one of the tallest
buildings to include CLT shear walls in the U.S.
CLT shear panels were stacked and spliced together with
a glued-in rod connection. “The rods were glued into the
bottom panel so the panel above could be dropped into the
slot, and then it was field glued to create a concealed, strong
and stiff connection,” said Hans-Erik Blomgren, Director of
Testing and Certification, Structural Products at Katerra. “It
was a progressive design, which the design team verified with
testing.”
Katerra also utilized an innovative timber-timber composite
rib floor panel. Crews glued and screwed two glulam beams to
the underside of each 10x30-foot CLT floor panel at the factory,
making the panel fit perfectly within Catalyst’s 30x30-foot
grid while taking full advantage of Katerra’s CLT manufacturing
capabilities.
“Use of the double-T rib configuration allowed us to maintain
a shallow span-to-depth ratio of 15.5,” explained Blomgren.
“Even when we added lightweight concrete topping, the panel
weighed just 41 psf. The 30-foot span is perfect for office use,
so from a developer and structural engineer point of view, it
offers exciting opportunities.”
“To our knowledge, this is one of the first projects in North
America able to achieve a long span using true wood-to-
wood composite action in these rib panels instead of concrete
composite action,” added Katerra’s Design Project Manager,
Drew Kleman.
Extensive TestingKaterra conducted destructive structural testing of critical
CLT shear wall corner connections and full-scale rib panels at
Oregon State University. “Testing gave us the confidence of
knowing the true strength and stiffness of the rib and shear
wall panels, and a way to streamline future product and building
code approvals,” said Blomgren. “Both stiffness and strength
slightly exceeded our predictions and proved that this system
can be replicated in the future.”
Acoustic and vibration performance also exceeded the
predictive models. “We tested the rib panel floor vibration
during construction, and again after the tenant improvement
was completed to quantify performance,” added Blomgren.
“There were a few nervous engineers and developers in the
room because the structural system spans 30 feet and is so
lightweight, but the test results make for a good success story.”
Long-term energy performance was another success story.
RDH, the consulting firm that performed the air leakage test
for the building envelope, reported that the air tightness
measurements, at 0.035 cfm per square foot, were the best
they have seen for a commercial building—even exceeding
Passive House requirements.
Catalyst Also Tells a Great Carbon StoryThe client’s desire to build a zero-carbon building was supported
by Katerra and heavily influenced design decisions. The design
team knew that mass timber would provide a smaller carbon
footprint than a comparable steel or concrete building, but they
wanted to know how much smaller.
In 2019, Katerra commissioned the Carbon Leadership
Forum and the Center for International Trade in Forest Products
(CINTRAFOR) at the University of Washington to undertake a
two-part Whole Building Life Cycle Assessment (WBLCA)—
one part focused on its supply chain and manufacturing
process, and the other on Catalyst.1 The goal was to understand
the environmental impacts and highlight opportunities for
impact reduction.
For Catalyst, the overall global warming potential was
calculated at 207 kg CO2e/m2 in emissions, and the carbon
dioxide stored in the wood building components was calculated
at 204 kg CO2e/m2. According to the report, “…the biogenic
carbon storage practically offsets the impacts of construction,
at least in the near-term before the wood decomposes in a
landfill at end-of-life.”
Nicolow emphasized the significance of the findings. “The
global warming potential for Catalyst was about half what you
might expect for a project like this; the median reported value in
the Carbon Leadership Forum’s Embodied Carbon Benchmark
Study 2 for commercial projects is 396 kg CO2e/m2,” he said.
“The manufacturing side, which includes harvesting, fabricating,
and building the mass timber panels, generates significantly
lower carbon emissions than concrete or steel. So, Catalyst tells
a great story, even before you consider biogenic carbon. But
when carbon storage is considered, the story is even better.
You not only have a low-embodied carbon building, but you
have a carbon-sequestering material that essentially makes up
for some of the emissions associated with the conventional
materials that went into the building.”
The leading standards for life cycle assessment, ISO 14040
and 14044, both consider biogenic carbon in their calculations. In
2020, the American Wood Council also updated environmental
product declarations3 for seven wood products, all of which
also consider biogenic carbon.
End-to-End Design, Manufacturing and Construction EfficienciesOne of Katerra’s corporate philosophies is to reduce on-site
labor and maximize efficiency by using factory-built assemblies
to speed construction. Catalyst accomplished that on several
fronts.
For example, the design team collaborated closely with
the CLT manufacturing team to optimize the fit between the
desired 30x30 grid spacing and the CLT plant’s capabilities.
“We considered manufacturing efficiency and used it to inform
the overall building design and floor plan,” said Kleman.
“When designers know the optimal capabilities of the CLT
fabrication line, we can work to use the entire panel, which
improves manufacturing efficiency and lowers cost and waste,”
Nicolow added. “Design for manufacturing is a matter of
optimizing one to take advantage of the other.”
Efficiency also translates to energy efficiency over the
life of the building, added Nicolow. “When you move to a
manufacturing paradigm and you’re bringing large, factory-
built panels to the job site rather than site-building from a kit
of smaller parts, it all translates to improved air tightness of the
envelope and better performance over time.”
Catalyst was progressive in terms of collaboration; everything
was coordinated, from design to installation on site, by a
vertically integrated team. Blomgren noted that, “It’s easier to
make key decisions early in design when the pain of change
is lower ... decisions that will make fabrication and installation
more efficient. Future Katerra projects are going to benefit from
the lessons learned from the Catalyst experience.”
Construction efficiency also added value. “End-to-
end collaboration and modeling were key,” said Katerra’s
construction manager, Kora Todd. “We held to tight tolerances;
doing so made it easier to identify a problem when something
didn’t fit precisely. I told everyone I never wanted to hear a
chainsaw on the job site—and 99.5 percent of the members
fit perfectly.”
Safety was another benefit of the CLT rib panels, since all
350 could be picked and quickly lifted into place, reducing the
amount of time workers spent under a crane. Crews improved
the rib panel installation process along the way; they began
with 30 minutes between panel crane picks, and eventually cut
that time by more than half.
Two-story CLT exterior wall panels arrived at the site almost
fully prefabricated, with a gasketed silicon strip system where
panels met. Fabricating crews applied the weather-resistant
barrier, window pre-flashing and insulation to the 3-ply CLT
panels at the factory for quick on-site panel installation.
Katerra ran four crews—shear walls, columns and beams,
floor panels and hardware—and each had four to five people
working at any one time. The entire structure took 11 weeks
to erect.
Education, Innovation Catalyst provided learning opportunities for all involved, even
the students who will use the facilty.
“Our goal was to create a building that would promote
learning and create an overall sense of student well-being,”
said Mingyuk Chen, Design Team Lead at Michael Green
Architecture. “So many studies point to the biophilic benefits of
natural materials. We like to use a building itself as teacher, and
Catalyst achieves that by exposing the structure.”
Extensive testing opened doors for future projects. “We
learned we could effectively build a five-story CLT shear wall,
avoiding the need for concrete,” said Blomgren. “We also
learned we could design rib panels to meet the 30-foot column
grid needed by the developer. A lot of thinking went into that
structural frame, even down to the vibration and acoustic
design, and it was all verified by actual testing. We rarely get
the chance to do that.”
The WBLCA shed light on the overall sustainability of the
project. “There’s been so much attention in the building sector
on operational energy and operational emissions,” Nicolow
said. “We’re just now shifting our attention to the impact of
the building products themselves, to the embodied carbon
story. Catalyst provides a great example of how wood can help
lower embodied carbon in buildings. To me, it’s one of the most
exciting aspects of the project.”
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CATALYST
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C A S E S T U D Y CATALYST
Disclaimer: The information in this publication, including, without limitation, references to information contained in other publications or made available by other sources (collectively “information”) should not be used or relied upon for any application without competent professional examination and verification of its accuracy, suitability, code compliance and applicability by a licensed engineer, architect or other professional. Neither the Wood Products Council nor its employees, consultants, nor any other individuals or entities who contributed to the information make any warranty, representative or guarantee, expressed or implied, that the information is suitable for any general or particular use, that it is compliant with applicable law, codes or ordinances, or that it is free from infringement of any patent(s), nor do they assume any legal liability or responsibility for the use, application of and/or reference to the information. Anyone making use of the information in any manner assumes all liability arising from such use.
Woodworks is an equal opportunity provider.Photos: Katerra – MGA | Michael Green Architecture © Ben Benschneider • WoodWorks Case Study WW-024 • Catalyst © 2020 WoodWorks
PROJECT DETAILS
LOCATION:
Spokane, Washington
STORIES:
Five stories plus partial day-lit basement
SIZE:
164,000 square feet
CONSTRUCTION TYPE:
Type IV Heavy Timber
COMPLETED:
2020
PROJECT TEAM
CLIENT/OWNER:
Avista Development, McKinstry, South Landing Investors LLC
ARCHITECT:
Katerra (Architect of Record) + Michael Green Architecture (Design Architect)
STRUCTURAL ENGINEER:
KPFF
CONTRACTOR:
Katerra Construction
CLT SUPPLIERS:
Katerra, Structurlam
GLULAM SUPPLIER:
Western Archrib
RIB PANEL ENGINEERING
AND SUPPLIER:
Katerra
A
ptly named for its goal of inspiring new ways to build,
Catalyst is the first cross-laminated timber (CLT) office
building constructed in Washington state and the first to use
panels produced at Katerra’s new CLT production facility. It is also
designed to Passive House principles and to achieve zero-carbon
and zero-energy certification from the
International Living Future Institute
(ILFI), making it a leading example
of sustainable building design.
“Catalyst, which anchors the
new South Landing Eco-District, is
more than just another smart building
project,” said Dean Allen, CEO of
McKinstry. “It is the cornerstone
of a fully integrated neighborhood
that will serve as a living laboratory
for new sustainability technologies,
materials, construction techniques and operational practices.
Catalyst demonstrates how the built environment can be
constructed and operated for our partners, our clients, our
communities and our planet to deliver sustainability and impact,
not just physical space.”
Catalyst is the first CLT office
building in Washington State,
and the first to use CLT panels
produced at the new Katerra
facility in the Spokane Valley. The
use of CLT means the building will
have a smaller carbon footprint
than comparable buildings built
with steel and concrete.
Mass timber building serves as an agent for change
1 LCA of Katerra’s CLT and Catalyst Building, Carbon Leadership Forum and the Center for International Trade in Forest Products at the University of Washington (2020), https://carbonleadershipforum.org/katerra/
2 Embodied Carbon Benchmark Study, Carbon Leadership Forum (2020), https://carbonleadershipforum.org/embodied-carbon-benchmark-study-1/
3 Environmental Product Declarations (EPDs) for Wood, American Wood Council, www.awc.org
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